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the last word

Photography meets digital computer technology. Photography wins -- most of the time.

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Backing up photographic images, part 4

September 14, 2012 JimK Leave a Comment

If you implement my backup philosophy in your own home or studio, you’re going to need three kinds of non-volatile storage. The first kind is your main disk storage. It should be fast, and large enough for all your images. The second is your backup disk storage. It should be equally capacious, but needn’t be… [Read More]

The Last Word

Backing up photographic images, part 3

September 14, 2012 JimK Leave a Comment

The drawback to the online-storage-with-backup approach has traditionally been cost. But disk cost per byte has been plummeting at a greater-than-historical rate for the last fifteen years, and it’s now so low that, for most serious photographers, it’s not an impediment to online storage of all your images. Why are disk prices dropping so fast?… [Read More]

The Last Word

Backing up photographic images, part 2

September 13, 2012 JimK Leave a Comment

Okay, let’s get started. People occasionally ask me what techniques I recommend for archiving images. I tell them that I don’t recommend archiving images at all, but I strongly recommend backing them up. Let me explain the difference. When you create an archive of an image, you make a copy of that image that you… [Read More]

The Last Word

Backing up photographic images, part 1

September 13, 2012 JimK Leave a Comment

In response to changes in computer technology, I’ve done a complete rewrite of the page on this site called “Backing up Photographic Images”.  Over the next few days, I’ll be posting it here. Here’s the preface: In chemical photography, you have only one master image of each exposure. It’s stored on the film you put… [Read More]

The Last Word

Downsampling with Lightroom

September 11, 2012 JimK 14 Comments

These days I’m as likely to reduce resolution when printing as I am to increase it. The slit scan files come out of the camera at up to 9000×64000 pixels. The sweep panos are typically 8000×24000. Even if you’re not using such extreme file sizes, you may be downsampling too. If you’ve got a D800… [Read More]

The Last Word

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Articles

  • About
    • Patents and papers about color
    • Who am I?
  • How to…
    • Backing up photographic images
    • How to change email providers
    • How to shoot slanted edge images for me
  • Lens screening testing
    • Equipment and Software
    • Examples
      • Bad and OK 200-600 at 600
      • Excellent 180-400 zoom
      • Fair 14-30mm zoom
      • Good 100-200 mm MF zoom
      • Good 100-400 zoom
      • Good 100mm lens on P1 P45+
      • Good 120mm MF lens
      • Good 18mm FF lens
      • Good 24-105 mm FF lens
      • Good 24-70 FF zoom
      • Good 35 mm FF lens
      • Good 35-70 MF lens
      • Good 60 mm lens on IQ3-100
      • Good 63 mm MF lens
      • Good 65 mm FF lens
      • Good 85 mm FF lens
      • Good and bad 25mm FF lenses
      • Good zoom at 24 mm
      • Marginal 18mm lens
      • Marginal 35mm FF lens
      • Mildly problematic 55 mm FF lens
      • OK 16-35mm zoom
      • OK 60mm lens on P1 P45+
      • OK Sony 600mm f/4
      • Pretty good 16-35 FF zoom
      • Pretty good 90mm FF lens
      • Problematic 400 mm FF lens
      • Tilted 20 mm f/1.8 FF lens
      • Tilted 30 mm MF lens
      • Tilted 50 mm FF lens
      • Two 15mm FF lenses
    • Found a problem – now what?
    • Goals for this test
    • Minimum target distances
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Printable Siemens Star targets
    • Target size on sensor
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Test instructions — postproduction
    • Test instructions — reading the images
    • Test instructions – capture
    • Theory of the test
    • What’s wrong with conventional lens screening?
  • Previsualization heresy
  • Privacy Policy
  • Recommended photographic web sites
  • Using in-camera histograms for ETTR
    • Acknowledgments
    • Why ETTR?
    • Normal in-camera histograms
    • Image processing for in-camera histograms
    • Making the in-camera histogram closely represent the raw histogram
    • Shortcuts to UniWB
    • Preparing for monitor-based UniWB
    • A one-step UniWB procedure
    • The math behind the one-step method
    • Iteration using Newton’s Method

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